bfd configuration for ipv6 bgp

[sachin30720041]

Hello All,

I am trying to configure BFD for ipv6 BGP. BFD session is not up. Am I missing any configuration?

R1-----R2

R1

-----------

ipv6 unicast-routing

int gi1

ipv6 enable

ipv6 address 2001:face::1/64

ip address 100.10.20.1 255.255.255.0

no sh

bfd-template multi-hop bfd1

interval min-tx 1000 min-rx 1000 multiplier 4

exit

bfd map ipv6 2001:face::2/128 2001:face::1/128 bfd1

router bgp 1

neighbor 2001:face::2 remote-as 2

neighbor 2001:face::2 fall-over bfd multi-hop

address-family ipv6 unicast

neighbor 2001:face::2 activate

exit

R2

------

ipv6 unicast-routing

int gi1

ipv6 enable

ipv6 address 2001:face::2/64

ip address 100.10.20.2 255.255.255.0

no sh

bfd-template multi-hop bfd1

interval min-tx 1000 min-rx 1000 multiplier 4

exit

bfd map ipv6 2001:face::1/128 2001:face::2/128 bfd1

router bgp 2

neighbor 2001:face::1 remote-as 1

neighbor 2001:face::1 fall-over bfd multi-hop

address-family ipv6 unicast

neighbor 2001:face::1 activate

Thanks,

Sachin

[balaji.bandi]

Is this Lab or a real environment?

have you seen this command executed?

interval min-tx 1000 min-rx 1000 multiplier 4

my lab it taking maximum : (999)

interval min-tx 999 min-rx 999 multiplier 4

here is up bot the side (same config of yours)

[Harold Ritter]

Hi @sachin30720041 ,

This is not a multi hop bfd session as the two routers are directly connected. You need to add the following under the interface and change your bgp config.

R1:

int gi1

bfd interval 1000 min_rx 1000 multiplier 4

router bgp

neighbor 2001:face::2 fall-over bfd 

R2:

int gi1

bfd interval 1000 min_rx 1000 multiplier 4

router bgp

neighbor 2001:face::1 fall-over bfd 

If you want to test BFD multi hop, you need to insert a router in between R1 and R2. Also, remember that "neighbor fall-over bfd multi-hop" will not work unless configured along with the "neighbor ebgp-multihop" statement.

Regards,